Scientists have proven that mammoths lived the same time as humans by finding fossils by each other ( human and mammoth fossils.) then doing dating tests to see if they’re the same number of years old. And yes indeed fossils READ MORE

There are a number of potential causes including Milankovitch cycles which are variations in the orbital eccentricity, axial tilt and precession of the Earth as it orbits the sun. These are thought to have an impact on the climate of READ MORE